/*
 *  E.java
 *
 *  Copyright (C) 2007  Francisco Gómez Carrasco
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  Report bugs or new features to: flikxxi@gmail.com
 *
 */
package com.softenido.cafe.misc;

import java.math.BigDecimal;
import java.math.MathContext;

/**
 *
 * @author franci
 */
public class E
{
    public static BigDecimal buildE(int setPrecision)
    {
        BigDecimal f = BigDecimal.ONE;
        BigDecimal e = new BigDecimal(2);
        MathContext mc = new MathContext(setPrecision);
        for(int i=2;i<setPrecision+3;i++)
        {
            f = f.multiply(new BigDecimal(i));
            BigDecimal e2 = e.add(BigDecimal.ONE.divide(f,mc),mc);
            if(e2.equals(e))
                break;
            e = e2;
        }
        return e;
    }
}
